Anglo Asian Mining PLC (LON:AAZ) shareholders will doubtless be very grateful to see the share price up 35% in the last quarter. But that doesn't change the fact that the returns over the last three years have been less than pleasing. After all, the share price is down 46% in the last three years, significantly under-performing the market.

With that in mind, it's worth seeing if the company's underlying fundamentals have been the driver of long term performance, or if there are some discrepancies.

View our latest analysis for Anglo Asian Mining

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Over the three years that the share price declined, Anglo Asian Mining's earnings per share (EPS) dropped significantly, falling to a loss. Due to the loss, it's not easy to use EPS as a reliable guide to the business. But it's safe to say we'd generally expect the share price to be lower as a result!

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here.

What About The Total Shareholder Return (TSR)?

We'd be remiss not to mention the difference between Anglo Asian Mining's total shareholder return (TSR) and its share price return. The TSR attempts to capture the value of dividends (as if they were reinvested) as well as any spin-offs or discounted capital raisings offered to shareholders. Its history of dividend payouts mean that Anglo Asian Mining's TSR, which was a 38% drop over the last 3 years, was not as bad as the share price return.

A Different Perspective

While the broader market gained around 11% in the last year, Anglo Asian Mining shareholders lost 19%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 3% over the last half decade. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. For instance, we've identified 2 warning signs for Anglo Asian Mining (1 is a bit concerning) that you should be aware of.